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## Homework Statement

I'm given a relativistic Boltzmann gas and told to find the entropy

## Homework Equations

[tex]\epsilon = pc[/tex]

p = 3d momentum

c = speed of light

## The Attempt at a Solution

I tried to start by finding the partition function, from which I can just take the derivative, but I don't know how I would sum the energies. Would I merely use p=hw/2*pi summed over all frequencies from 0 to infinity?